General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0HEWDZ
ADC Name
OR000213-Compound (la) DAR 1.2
Synonyms
OR000213 Compound (la) DAR 1.2
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Organization
Orum Therapeutics, Inc.
Drug Status
Investigative
Indication
In total 1 Indication(s)
Acute myeloid leukaemia [ICD11:2A60]
Investigative
Drug-to-Antibody Ratio
1.2
Structure
Antibody Name
OR000213
 Antibody Info 
Antigen Name
Myeloid cell surface antigen CD33 (CD33)
 Antigen Info 
Payload Name
NeoDegrader P1
 Payload Info 
Therapeutic Target
Protein cereblon (CRBN)
 Target Info 
Linker Name
OR000213-Compound (la) DAR 1.2 linker
General Information of The Activity Data Related to This ADC
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 2 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Tumor Growth Inhibition value (TGI) 
≈ 32
%
HL-60 cells
Adult acute myeloid leukemia
Tumor Growth Inhibition value (TGI) 
≈ 52.13
%
HL-60 cells
Adult acute myeloid leukemia
Revealed Based on the Cell Line Data
Click To Hide/Show 1 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Half Maximal Inhibitory Concentration (IC50) 
19
pM
HL-60 cells
Adult acute myeloid leukemia
Full List of Activity Data of This Antibody-drug Conjugate
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 2 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 32.00% (Day 24) Positive CD33 expression (CD33+++/++)
Method Description
HL-60 human AML fragments were implanted subcutaneously in theright flank of the mice. Mice were divided into 4 treatment groups (N=8/group), as follows: trastuzumab-Compound (la) conjugate (5 mg/kg, iv, qd x 1); OR000213-Compound (la) conjugate (1 mg/kg, iv, qd x 1); OR000213-Compound (la) conjugate (5 mg/kg, iv, qd x 1).
In Vivo Model HL-60 CDX model
In Vitro Model Adult acute myeloid leukemia HL-60 cells CVCL_0002
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 52.13% (Day 24) Positive CD33 expression (CD33+++/++)
Method Description
HL-60 human AML fragments were implanted subcutaneously in theright flank of the mice. Mice were divided into 4 treatment groups (N=8/group), as follows: trastuzumab-Compound (la) conjugate (5 mg/kg, iv, qd x 1); rituximab-Compound (la) conjugate (1 mg/kg, iv, qd x 1); rituximab-Compound (la) conjugate (5 mg/kg, iv, qd x 1).
In Vivo Model HL-60 CDX model
In Vitro Model Adult acute myeloid leukemia HL-60 cells CVCL_0002
Revealed Based on the Cell Line Data
Click To Hide/Show 1 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50) 19.00 pM Positive CD20 expression (CD20+++/++)
Method Description
Cells were plated at about 500 cells per well in a 96-well plate in 100 uL of media. In vitro activity and targeted delivery of ADCs, the isotype-matched negative controls ADCs, and naked antibodies control were assessed in cells.
In Vitro Model Adult acute myeloid leukemia HL-60 cells CVCL_0002
References
Ref 1 Neodegrader conjugates; 2021-10-07.

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